Rotary separator



w. A. SMITH ROTARY SEPARATOR Jan. 13, 1931.

Filed Oct. 31, 1927 2 Sheets-Sheet 1 Jan. 13, 1931. w. s T 1,788,851

ROTARY SEPARATOR Filed Oct. 31, 1927 2 Sheets-Sheet 2 x Patented e WILLIAM ALL-EN SMITH, or MaNci insTnm-EnenANn, nssienontro messing con- 1 c VEYANCE, 6tEXTRACTION(1929)LIIYIITED, onanonnon, ENGLAND,"acoivrrnny-or GREAT BRITAIN- 1T Application filedwpctober 31 1e27, s nai nb, ashore, aimiii Great Britain fiovember 9, i926;

i V I ii' lThis invention relates to rotaryjseparators i andinpartlcularto separators for extracting:

from airor jgases, dust or like finely divided niaterlal in suspension,

According to this lnvention the rotary essp rate sc el l a fecew l n ebunkerhav ng lupper separating'spaoe or chamber, an inlet tll collecting bunker and an outlet fromf the separating space or chamber surrounded, by an annular ring in ityiof centrifugal elements or? vanesf'fclosel y '15 -f1S Q Qd5-FQ d r n w h hep rfof tecl; 1f member 3nd Y shaped "to: 1 produce a counter v pressure to, the passageoffthe' air .org'asesf'to the 3 outlet; Other features 1 of, cthe i'nve'ntion he in thedetails of constructioni'of;the iin claimed. 1

a, of one form o f. ;rotary"separator made in accordance with this invention.-

In the exampleillustrated in niggfiana' 2,1

p the separator is applied to pneumatic conveyance app'aratusfor separating thefine suspended" matter from the air tonpreve'nt it from reaching the exhauster. The separator mechanism is arranged in one end of the separating space or: chamber a above the receiving" or collecting bunker b and inthe 1 7 -annu ar mouth'of the exhauster pipe 0 and comprises a high speed'rotor consisting of a centrifugal element and a circular perforated disc e having a large number of small holes and is [mounted on ahoriz'ontal shaft r ang d substantially axiallyof the mouth of the ex 7 hauster pipe 0. 1 Thecentrifugalelement con-j "'gsists of a'fan like disc having a number of v blades or iva'nes' h bent to give when rotating r counter pressure totheoutwardpassage of the-air. This centrifugal element is ar-. ranged on the outer or impact face of theperforated disc. The disc 6 runs in an an- V nular channel or ringla secured to the end of transverse sectional elevation V ffle's m and 1;. 1i

the nmfl ric downto- -po e o a so, thatsuchZfine material may eam n fo'ff. With the o'ther""and-heavier material inffthe-95 I of 1 k i I arrangement Qfthe'outlet-prevents "air from bein 'gdravvn back into the'annuljar channel or air sp'ace,'-vvhich Woul'd'part'ly deA i feat theaction'rofthe separator? Further, a 100 An auxiliary we sef he we ts.

vided' from the annularriIig-k andeXtending to, the teacher ,jthe-collec ting' bu'nker orfinto a separate' collectiiigbunker, to allowpuof the forthexconveyiiigair, so as to partition the s spended solicljniatter into the colle'ctf-r in the bunkerQ-jj' I h h j Infoperatio'n, thefconveyingi air enters by r esc pe f yi u m enaa h hi y i- Ilect i'nfl'th'e rin'g; fBaflie' platesm andh) are 7 j p1o videfd,'. in th'ef separator: and abovethe inet bl which is rotatabl monntedlahigh'speed m 5 tornovering suchvputlet comprising a-per -gl forated "member, (discscrcone) andaplu raL' eirsep rame pawf m the ecb ec il s i n toiefi b he nitia depositi n of III- unker blbeforefreaching the rotarydi'sc,

i and so that the disturbance cau'sedi'hy theiro;

tating disczwill notmaterially'interfere with ippl i i nfor with hQ GPQSitQQ ma te which falls by gravity into the bunker This air is however, still heavily charged "with affine impalpable powder insu'spension and rises from, the bunker hetvve eni'the loaf- I This eetsame thatass s-i eflector Tdisl 1e kpass ngrth ll mund the edge"ofj'samg' vhichis meanwhile rotated at suitable'high speed and the solid parn the air impi'riging on thev'anesfh or o the 'solidfpartsj of the disc jr'eceive a grotaryior tangential motion jarej proj ected radiallyyortangentially bycentrifugal force i I a channel surrounding the separ tor-1* b'ackfintothe separating chamberor into the discsgthe clea ntzadj acent' to the bunken outlet .7 s'e'd a r a on ipa si g thrbflg were exhausterby the pipe 0' while the solid m te f l s w i fi h ba les g b -fih r l-"p lecting bunker: outletpipefor any of the t e ep ra ed m eri h i yw lle V nne' l rrov d di' d is a suitable non-return flap be provided in such pipe.

The deflector member of the separator may have any number of discs or pairs orsets of them or may only consist of one disc as shownaccording to the nature of the work 7 for which it is required, and insteadof small perforations, radial slots or other relatively may obviously be'u'sed in combination as well asseparately and eachconstitutes a simple and effective separator. The axis oflthe relarge 1 epeniiigsmay be used where the circiimstances' permit, or make it desirable In a modified form of the separator one or more cones are employed in place oftli'e' discs,

which cones may be arranged in either direction." J 1 v I The yarious forms of the deflector member volving element of the deflector maybe .hori- Zontally, vertically or angularly arranged.

Though its main nsev is in connection with pneumatic conveyance apparatus for puree venting the'finefsuspended i'mpalpable dust from reaching the exhauster, which dust is so destructive to the bearings andreciprocat ing parts thereof, the separator may'als o be used torotherpurposes, as forfinstancein purifying air;. for"the extractionoi grit from flue gases andrfor similar purposes. I I The arrangementof the perforations or vanes in the discs or cones is open to modification to suit thepurpose for which thesepa- .V'rator is required, soalso is'tlie shape ofi the rotating element, for example, a hemispherical element may be used and incl ned,';spiral or tangentiallyarranged vanes maybe employed. v

The improved. separatoris more efficient i and compact than other forms of separators hitherto proposed and in particularascom p' u ed with the rotary drum type ofseparator many otthe-difiiculties, for instance, as regards. thefcreation ofvortices which remain unbroken do not arise.

' What I claim is:

A rotaryseparatorl adapted to beinstalled n a pneumat c} conveyance system for extracting from air or'gas'espassingthrough it, dust or lilrefinely dividedmaterial in suspension. comprising a receiv ngor collecting bunker having an upper separating space or 1 chambenan inlet to the collecting bunker, an outlet from the separating spaceor chamber, bafiiesbet' eenfthe collecting bunli'erand the I separating space-or chamber, a perforated de- :flector member rotatably mounted adjacent to the said: outlet, through or past which or other valve may stalled in apneumaticconveyance systemior extracting from air or gases passing through it, dust or like finely divided material in suspension, comprising a receiving or collecting bunker havingan upper separatingspace or 1 chamber, an inlet to the collecting bunker, an

outlet from the separating space or chamber, an annular r ng within the separating cham- "beraiid-over the Outlet, bafile's' between the collecting bunker and the separating'space or chamber, a perforated deflector. member r0- tatab-ly mounted within the said annular ring, through or past which member the air or gases'have to pass out-from the casing, rotary impact'members associated with the said deflector member to produce "a counter pressure to the normal passage of the gases through or past the said deflector member,

and means for driving the deflector member,

setforth; v

A rotary separator; adapted to be installed iii-a pneumatic conveyance system for extracting from air orgasespassing through t, d'n'st or like finely divided mater al n suspension, comprising; a cas ng having an upper separating space or chamber, a collecting bunker below sai-d space or chainher, bafllesbetweentheseparating space or cliainberlan'd the bunker, an inlet below one of the*baflles, an outlet-from the separatingspace orjchamberr an annular ring surrounding said outlet, a perforated disc 1 rotatablymounted insaid ring, a fan element ifiiemb rtli a g e av t pa s ofutl from the casingprotaryimpact: members associated" with the said deflector member to produceacounter pressure to, the normal passage of the gases through or pastthe' said defleCtQ member, aiidmeans' for driving the g g deflector member sasset.forth. a 2. A rotary separator adapted to be in- 

